-I think he is taking an active part in social work.-I agree with you __________.
—How many times have you been to China?—In fact, it is the first time I __________ here.
His father told me that he __________ for the United States three days __________.
Please __________ the numbers and I’m sure they will __________ more than 1, 000. A. add up; add to B. add up; add up C. add up; add up to D. add to; add up
Being afraid of making mistakes, the little boy __________ answer his teacher’s question.
Iraq has __________ too many wars since 1990, making his people __________ a lot.